Singapore Airlines is launching the A380 service to the USA via Frankfurt from 15 January 2011. On this occassion, they are offering a special fare of INR 60,000 for a return trip from Mumbai to any of the four US locations served by SIA, namely, New York, Houston, Los Angeles and San Fransisco. This deal is valid for the Economy segment, and from any of the 10 airports served in India by Singapore Airlines / Silk Air.
The deal is sweet in case you are willing for a longer routing from India and want to try out the SQ A380, which I bet would be very good service. I’ve never flown SQ to the USA, but I am thinking if this deal is where I start. You should find more details of the deal here.